got a bug with java, i've installed it again but it's the same error:

Apache Tomcat/6.0.16 - Error Report

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [org.iogc.cms.User#44797792]
org.hibernate.impl.SessionFactoryImpl$1.handleEntityNotFound(SessionFactoryImpl.java:377)
org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:145)
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:195)
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:103)
org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:846)
org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:557)
org.hibernate.type.EntityType.resolve(EntityType.java:379)
org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854)
org.hibernate.loader.Loader.doQuery(Loader.java:729)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
org.hibernate.loader.Loader.doList(Loader.java:2220)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
org.hibernate.loader.Loader.list(Loader.java:2099)
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
org.hibernate.impl.CriteriaImpl.uniqueResult(CriteriaImpl.java:305)
org.iogc.cms.Root.getUser(Root.java:314)
org.iogc.cms.Root.getUserBase(Root.java:336)
com.rdews.cms.HTTPDispatcher.doRequest(HTTPDispatcher.java:134)
com.rdews.cms.HTTPDispatcher.doGet(HTTPDispatcher.java:230)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.tuckey.web.filters.urlrewrite.RewrittenUrl.doRewrite(RewrittenUrl.java:176)
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:728)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.16 logs.
Apache Tomcat/6.0.16